<template>
  <div>
    <el-row type="flex" justify="end">
      <el-select @change="dateChange" v-model="currentYear" size="small">
        <el-option
          v-for="item in yearList"
          :key="item"
          :value="item"
          :label="`${item}年`"
        />
      </el-select>
      <el-select @change="dateChange" v-model="currentMonth" size="small">
        <el-option
          v-for="item in 12"
          :key="item"
          :value="item"
          :label="`${item}月`"
        />
      </el-select>
    </el-row>
    <el-calendar v-model="currentDate">
      <template #dateCell="{ data, date }">
        <div class="date-content">
          <span class="text"> {{ data.day | getDay }}</span>
          <span v-if="isWeek(date)" class="rest">休</span>
        </div>
      </template>
    </el-calendar>
  </div>
</template>

<script>
export default {
  filters: {
    getDay(oldVal) {
      const day = oldVal.split("-")[2];
      // 如果是以0为开头的单位数日期 则切割后返回
      return day.startsWith("0") ? day.substring(1) : day;
    },
  },
  data() {
    const currentDate = new Date();
    const currentMonth = currentDate.getMonth() + 1;
    const currentYear = currentDate.getFullYear();
    const yearList = [];
    for (let index = 0; index < 11; index++) {
      yearList.push(currentYear - 5 + index);
    }

    return {
      currentDate,
      currentMonth,
      currentYear,
      yearList,
    };
  },
  methods: {
    dateChange(data) {
      console.log(new Date().getFullYear());
      // 知道了年份或者月份发生了改变
      // 重新计算当前日期交给日历显示即可
      const dateStr = `${this.currentYear}-${this.currentMonth}-1`;
      // console.log(dateStr)
      data !== new Date().getMonth() + 1
        ? (this.currentDate = new Date(dateStr))
        : (this.currentDate = new Date());
    },
    // 是否周末休息
    isWeek(date) {
      // 返回的是 是否为周末
      return date.getDay() === 6 || date.getDay() === 0;
    },
  },
};
</script>
<style  scoped>
::v-deep .el-calendar-day {
  height: auto;
}
::v-deep .el-calendar-table__row td,
::v-deep .el-calendar-table tr td:first-child,
::v-deep .el-calendar-table__row td.prev {
  border: none;
}
.date-content {
  height: 40px;
  text-align: center;
  line-height: 40px;
  font-size: 14px;
}
.date-content .rest {
  color: #fff;
  border-radius: 50%;
  background: rgb(250, 124, 77);
  width: 20px;
  height: 20px;
  line-height: 20px;
  display: inline-block;
  font-size: 12px;
  margin-left: 10px;
}
.date-content .text {
  width: 20px;
  height: 20px;
  line-height: 20px;
  display: inline-block;
}
::v-deep .el-calendar-table td.is-selected .text {
  background: #409eff;
  color: #fff;
  border-radius: 50%;
}
::v-deep .el-calendar__header {
  display: none;
}
</style>